Ukraine’s Security Service (SBU) has detained a former member of the Crimean parliament wanted by Kyiv on suspicion of treason.

Markiyan Lubkivskiy, an adviser to the SBU chief, wrote on Facebook on April 28 that former Crimean lawmaker Vasyl Hanysh was detained at the Kalanchak checkpoint in the southern Kherson region near Russian-controlled Crimea.

Lubkivskiy said Hanysh would "transported in the nearest future to Kyiv, where investigators of the Prosecutor-General's Office are waiting for him."

The Prosecutor-General's Office is investigating several current and former lawmakers in Crimea on suspicion of helping Russia take over Crimea in March 2014 and violating the rights of the peninsula’s residents.

Russia annexed Crimea from Ukraine after sending troops there and staging a secession referendum that was declared illegal in an overwhelming vote in the UN General Assembly.